Mayweather vs McGregor has been widely criticised and labelled a gross mismatch due to the Irishman's lack of boxing expertise in comparison to the American.

Golovkin vs Alvarez on September 16, live on BoxNation, pits two of sport's pound-for-pound greats together and 'GGG' insists the pair's collective boxing expertise and power will make for a much more compelling contest.

"I think people understand. True fight? Boxing fight? It's mine with Canelo. Or big show? Funny show? Everybody knows Conor is not a boxer, just a showman, if you want to watch a true fight, watch my fight," Golovkin said.

The winner will be the best middleweight in the world (Image: Getty Images Europe)

Golovkin is favoured to beat Alvarez (Image: REUTERS)

Mayweather posted a mocked up post of his fight vs McGregor (Image: floydmayweather/Instagram)

"This is business, I think Conor with Floyd is not a boxing fight. Money fight? OK. Show fight? OK.

"Everybody knows we have power and huge boxing IQ, I think it's 50-50, who lands first."

Alvarez, who last a wide points decision to Mayweather in 2013, claims Mayweather's style is why his fights are not entertaining, whereas himself and Golovkin are "100 percent guaranteed" to engage and thrill the fans.

"I knew that [Mayweather vs Manny Pacquiao] wasn't going to be a good fight because of Mayweather's style," Alvarez said. "He fights pretty much anybody in his style, it's just not a good fight.

"This is going to be a great fight, 100 percent guaranteed, because of the styles. He [GGG] likes to fight and be aggressive and so do I -- you can't fail.

Mayweather is expected to school McGregor in the boxing ring

The Irishman is not expected to make the fight competitive (Image: Zuffa LLC)

"This is the fight the fans wanted, demanded. They demanded the fight, so to question whether they're going to see it or not: there shouldn't be a question.

"This is the fight that was demanded and we're happy to give it to them. It's two fighters at their best, their peak, and a very high level, and they're going to be fighting each other and giving their best, so the fans are the ones who are going to enjoy this fight."